Sure he will have value at the trade deadline, but it's this exact reason why we should keep him for the playoffs!
He has shown he can play against the best lines out there, shut them down, even outscore them. I think he would be a huge part of the Flames in the post season.
I said the same thing about Niedermayer last year, and look what he did. You cannot overstate the importance of a great checker with skill at playoff time.

IF the Flames make the playoffs having 2 good defensive centers like Conroy and Yelle will be a huge benefit as it allows you to match up against the top seeded teams who often roll 2 great lines.